Cañada Alamosa may refer to one of several places names in the US state of New Mexico:
Geography Cañada Alamosa, former name of Monticello Canyon, a valley in Sierra County and Socorro County, New Mexico The box canyon, part of Monticello Canyon, midway along the course of Alamosa Creek, known today as Monticello Box Cañada Alamosa, a valley and a tributary stream of Rio Vallecitos in Rio Arriba County, New Mexico
Populated places Cañada Alamosa (Apache land), ancestral lands of the Warm Springs Apache Cañada Alamosa, or Canada Alamosa, the original name of Monticello, New Mexico San Ygnacio de la Alamosa, New Mexico, mistakenly referred to as Cañada Alamosa during the American Civil War
Events Battle of Canada Alamosa (1861), skirmish of the American Civil War